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14This is the boldness which we have toward him, that, if we ask anything according to his will, he listens to us. 15And if we know that he listens to us whatever we ask, we know that we have the petitions which we have asked of him. 16If anyone sees his brother sinning a sin not leading to death, he shall ask, and God will give him life for those who sin not to death. There is a sin leading to death. I don`t say that concerning this he should make a request. 17All unrighteousness is sin, and there is a sin not leading to death.
1 John 5:14-17 (WEB)